public static bool Serialize <T>(T packet, Stream destination) where T : Packet
{
PacketBase packetImpl = packet as PacketBase;
if (packetImpl == null)
{
Debug.LogError("Packet is invalid.");
return(false);
}
if (packetImpl.PacketType != PacketType.ServerToClient)
{
Debug.LogError("Send packet invalid.");
return(false);
}
memoryStream.Seek(PacketHeaderLength, SeekOrigin.Begin);
memoryStream.SetLength(PacketHeaderLength);
ProtobufHelper.ToStream(packet, memoryStream);
// 头部消息
ET_SCPacketHeader packetHeader = new ET_SCPacketHeader();
packetHeader.Flag = 0; //客户端发送的消息，默认flag为0,服务器会解析flag字段值
packetHeader.PacketLength = (int)memoryStream.Length - ETPackets.ET_PacketSizeLength; // 消息总长度需要减去前2字节长度,第3，4，5字节也是消息长度（packetsize）的一部分
//Debug.LogInfo("发送消息长度：" + packetHeader.PacketLength);
packetHeader.Id = (ushort)packet.Id;
memoryStream.Position = 0;
byteses[0].WriteTo(0, (ushort)packetHeader.PacketLength);
byteses[1][0] = packetHeader.Flag;
byteses[2].WriteTo(0, packetHeader.Id);
int index = 0;
foreach (var bytes in byteses)
{
Array.Copy(bytes, 0, memoryStream.GetBuffer(), index, bytes.Length);
index += bytes.Length;
}
memoryStream.WriteTo(destination);
long len = destination.Length;
long pos = destination.Position;
byte[] temp = (destination as MemoryStream).GetBuffer();
return(true);
//}
}
public Packet DeserializePacket(IPacketHeader packetHeader, Stream source, out object customErrorData)
{
customErrorData = null;
ET_SCPacketHeader header = packetHeader as ET_SCPacketHeader;
if (header == null)
{
Log.Warning("Packet header is invalid.");
return(null);
}
Packet packet = null;
if (header.IsValid)
{
Type packetType = GetServerToClientPacketType(header.Id);
//Log.Debug("~~~~~~~~~~~"+packetType.Name);
if (packetType != null && source is MemoryStream)
{
//packet = (Packet)RuntimeTypeModel.Default.DeserializeWithLengthPrefix(source, ReferencePool.Acquire(packetType), packetType, PrefixStyle.Fixed32, 0);
object instance = Activator.CreateInstance(packetType);
//packet = (Packet)ProtobufHelper.FromStream(packetType, (MemoryStream)source);
packet = (Packet)ProtobufHelper.FromStream(instance, (MemoryStream)source);
}
else
{
Log.Warning("Can not deserialize packet for packet id '{0}'.", header.Id.ToString());
}
}
else
{
Log.Warning("Packet header is invalid.");
}
ReferencePool.Release(header);
//DispatchMsg(packet);
return(packet);
}
public IPacketHeader DeserializePacketHeader(Stream source, out object customErrorData)
{
customErrorData = null;
ET_SCPacketHeader scHeader = ReferencePool.Acquire <ET_SCPacketHeader>();
MemoryStream memoryStream = source as MemoryStream;
if (memoryStream != null)
{
int packetSize = BitConverter.ToUInt16(memoryStream.GetBuffer(), 0);
byte flag = memoryStream.GetBuffer()[ETPackets.ET_MessageFlagIndex];
ushort opcode = BitConverter.ToUInt16(memoryStream.GetBuffer(), ETPackets.ET_MessageOpcodeIndex);
//这里需要用服务端发过来的packetSize的值减去消息包中flag和opcode的长度，
//因为服务端在发送消息时设置的packetSize的值是包含flag和opcode的，而
//客户端在解析包头的时候已经解析了flag和opcode，因此剩余要解析的数据长度要减去3（flag和opcode的总长度是3个字节）
scHeader.PacketLength = packetSize - ETPackets.ET_MessageIdentifyLength;
scHeader.Flag = flag;
scHeader.Id = opcode;
return(scHeader);
}
return(null);
}
